Bing Rewards provides points for using the Bing search engine instead of rival ones. It has a level system and referral programme, and users can get rewards across many of Microsoft's brands, including Xbox, Skype, Windows Phone, and the Windows Store. Gift cards and charity donations are also available.

Unfortunately, it is currently only available in the US, but Microsoft said: "We're always looking at ways to expand the Rewards platform to more users."